Physical Therapy Assistant Practice Exam 2025 - Free PTA Practice Questions and Study Guide

The most appropriate location to attach an electrode for neuromuscular electrical stimulation (NMES) of the peroneus longus is on the anterolateral surface of the lower leg. This muscle plays a crucial role in foot eversion and plantar flexion, and its anatomical position allows for effective stimulation when electrodes are placed in this area.

Attaching the electrode to the anterolateral surface allows the electrical currents to effectively target the peroneus longus due to its proximity to the surface and its path along the lateral aspect of the lower leg. This placement maximizes the stimulation of the motor points associated with the muscle, ensuring optimal activation and resulting contraction.

In contrast, other locations such as the posterior calf would primarily target the gastrocnemius and soleus muscles. The medial aspect of the thigh is related to adductor muscles, not the peroneus longus, and the dorsum of the foot would be too distal to effectively stimulate the peroneus longus, as its primary action is coordinated through the lower leg. Therefore, positioning the electrode on the anterolateral surface is essential for achieving the desired therapeutic effects of NMES on the peroneus longus.